Foot thumping may serve to confuse predators and also may warn other kangaroos of danger, but exact function of this common behavior is not yet known (Rose et al 2006)

Olfaction/Scent Marking

Males of many Macropus species have scent glands on their chest (Sharman & Calaby 1964)

Males of some macropod species either rub their chests on females or on vegetation while in the presence of estrus females (Ord et al. 1999)

Male forest wallabies (Dorcopsis luctuosa) in captivity rub their chests on tree trunks while standing erect; no females were seen to respond (Bourke 1989)

In experimental settings, kangaroos and wallabies have been observed to avoid or flee from areas with dingo scents but not coyote scents or human scents (Parsons & Blumstein 2010) (Parsons et al. 2007)

Locomotion

Red-necked wallabies travel by hopping, although they are also good swimmers by using front and hind limbs "dog-paddle" style.

If female has no pouch young, and mates near the end of a breeding season, she doesn't give birth until 8 months later in the next breeding season

Bennett's wallabies birthing season may have evolved in the last 11,000 years after global sea level rise separated more southerly (and colder) Tasmania from mainland Australia (Tyndale-Biscoe & Hinds 1990)

If these wallabies are transferred to northern latitudes, they keep their seasonality and adjust the timing to give birth after the northern summer solstice

Reproduce efficiently due to (Merchant & Calaby 1981):

Delayed implantation of the embryo (embryonic diapause) which is controlled both by whether the female is lactating and also by the light available in a particular season of the year

Only the tammar wallabies (Macropus eugenii) which also are a colder climate, southern species have the same dual control of embryonic diapause; other macropods delay implantation depending only on whether the female is nursing or not

Tammar and Bennett's wallabies thus can delay their births until a warmer time of year

In New Zealand, M. r. rufogriseus is "pre-adapted" for surviving well in a new environment after introductions from a similar habitat in Tasmania (LePage et al. 2000)

Gestation and Pouch Period

In both subspecies of red-necked wallabies a new birth is 16-29 days after a joey leaves the pouch
(Merchant & Calaby 1981)

All other macropods give birth to a new young or come into estrus within a day or two after an older joey permanently leaves the pouch

In 1940s red-necked wallabies declared a pest for their threats to New Zealand sheep pastures (they both eat grass) (Long 2003):

1947 to 1956: 70,000 to 100,000 killed as pest

In response to perceived threats to agricultural crops, sheep pastures, and planted forestry seedlings, the New Zealand Biosecurity Act of 1993 requires landowners on New Zealand's South Island to control wallaby populations; control methods may include (Warburton 2005)
(Environment Canterbury 2011):

Poisoning

Aerial shooting

Hunting with dogs

Present controls in New Zealand remove around 20% of the population yearly, and are said to not affect overall population numbers

Some 30,000 to 50,000 red-necked wallabies are commercially harvested for meat from private lands in Tasmania each year, under the Meat Hygiene Act of 1985 and the Nature Conservation Act of 2002
(Australian Government 2011a,b)

These wallabies are considered partly protected wildlife, subject to hunting by licensed, trained hunters